CBIL Logo
CBIL
Industrial Minerals & Construction

Limestone, Gypsum, Aggregates, Fluorspar & Refractory Minerals

Freight-led bulk minerals and lime for cement, steel, refractories & construction

Limestone, gypsum and aggregates are the cheapest cargoes on the water and the hardest to land well. The 2025 export declarations: Oman shipped 9.17 million MT of limestone (HS 2521) at USD 7/MT, 14.32 million MT of gypsum (HS 2520) at USD 14 and 12.02 million MT of aggregates (HS 2517) at USD 6; India, Indonesia, Malaysia, Thailand and Morocco make up most of the rest. At those values a Supramax carries USD 300,000–800,000 of rock and the freight to India, Bangladesh, Southeast Asia or East Africa is usually more than the cargo, so the delivered price is decided by the vessel: geared or gearless, discharge draft, loading rate, laytime. CBIL is a commodity brokerage company that also runs a chartering desk (LaycanDesk); we are working Shinas and Sohar limestone to Chittagong and Oman boulder cargoes now, and we quote the stone and the ship together against SGS or Intertek chemistry, sizing and mechanical-test certificates on FOB, CFR and CIF terms.

Need the ship as well? Our chartering desk prices bulk limestone, gypsum and aggregates freight on LaycanDesk.

Excluded origins are not offered, including product re-exported, blended or re-processed through a third country. Every lot moves with a certificate of origin naming the producing plant, mine or grower country, and nothing is quoted before the seller and loading point are known.

Indicative reference

$6–30 USD / MT

as at September 2026

IncotermsFOB · CFR · CIF
OriginsOman, India, UAE (Fujairah), Thailand, Morocco, Indonesia, Malaysia, Egypt
PackagingBulk vessel (geared Handymax / Supramax; self-unloaders on term gypsum lanes)

Reference level only — not an offer, and reviewed quarterly. Levels shown are as at September 2026. Firm pricing is quoted per RFQ, subject to volume, terms and inspection.

Oman · India · UAE (Fujairah) · Thailand · Morocco · Indonesia · Malaysia · Egypt

Products in this range

Limestone, Gypsum, Aggregates, Fluorspar & Refractory Minerals we source and broker

Each product below is supplied to its own specification and grading. Open one for full specs, grades and typical applications — or send an RFQ covering several at once.

Limestone (Flux & Crushed)

High-CaCO₃ flux lumps and crushed stone in Supramax lots

Flux-Grade Lump 10–40 mm (≥ 95% CaCO₃)Flux-Grade Lump 40–80 mm
View specifications

Natural Gypsum Rock

Cement- and board-grade natural gypsum, 88–95% purity

Sinai Premium Clinker Retarder 90–93% (Cl ≤ 0.03%)Cement-Grade Gypsum 85–92% (0–50 mm)
View specifications

Construction Aggregates (Gabbro, Granite & Armour Rock)

Gabbro, granite and armour rock in Supramax lots

Crushed Gabbro 5–10 / 10–20 / 20–40 mmCrushed Granite 10–20 / 20–40 mm
View specifications

Magnesite (Raw & Calcined Magnesia)

Raw magnesite lumps and dead-burned magnesia for refractories

Raw Crystalline Magnesite Lump 25–200 mm (44–47% MgO)Raw Cryptocrystalline Magnesite 0–50 mm
View specifications

Steel Slag & Mill Scale

BOF and EAF steel slag and mill scale in Handymax and Supramax lots

BOF Steel Slag Aggregate 0–40 mm (weathered, low free lime)EAF Slag Aggregate 10–20 / 20–40 mm
View specifications

Armour Rock & Boulders

Graded armour rock and boulders for breakwaters, in Supramax lots and on deck barges

Core Rock / Quarry Run 1–500 kgFilter & Underlayer Rock 60–300 kg
View specifications

Fluorspar (Acidspar ≥ 97% CaF₂ & Metspar)

Acidspar (CaF₂ ≥ 97%) for AHF, LiPF₆ & PVDF battery chemicals; Metspar for steel flux

Acidspar Flotation Filter Cake (≥ 97.0% CaF₂, 8–10% H₂O, IMSBC Group A)Acidspar Thermally Dried Powder (≥ 97.0% CaF₂, H₂O ≤ 0.1%, FIBC Bags)
View specifications

Refractory Raw Materials (Calcined Bauxite, Fused Alumina, DBM)

Calcined bauxite, brown fused alumina and dead-burned magnesia by Al₂O₃, MgO, iron and density

Refractory Calcined Bauxite 85–88% Al₂O₃Refractory Calcined Bauxite ≥ 90% Al₂O₃
View specifications

Quicklime (Calcium Oxide, Burnt Lime)

High-calcium burnt lime by CaO, reactivity and size: lump, pebble and powder

High-Calcium Quicklime Lump (CL 90-Q)Pebble Quicklime, closed size fraction
View specifications

Hydrated Lime (Calcium Hydroxide, Slaked Lime)

Calcium hydroxide powder by Ca(OH)₂ and fineness: building, water and food grade E526

Building Hydrated Lime CL 90-S (EN 459-1)ASTM C207 Type N & Type S
View specifications

Dolomitic Lime & Burnt Dolomite (Doloma)

Calcined dolomite by MgO and CaO for steel slag conditioning and refractories

Soft-Burnt Dolomitic Lime (steel flux)Dead-Burned Dolomite (refractory grain)
View specifications

Silica Fume / Microsilica (Densified & Undensified)

Densified and undensified microsilica at 85–96% SiO₂ for high-performance concrete and refractories

Undensified Silica Fume 92–96% SiO₂ (200–350 kg/m³)Densified Silica Fume 85–96% SiO₂ (500–700 kg/m³)
View specifications

Refractory Castables & Mortars (Dense, Insulating, LCC / ULCC)

Dense and insulating castables, low- and ultra-low-cement grades, gunning mixes and air-setting mortars by alumina content and service temperature

Conventional Dense Castables (fireclay / bauxite aggregate)Low-Cement Castables (LCC), medium to high alumina
View specifications

Granite Blocks (Crude & Rough-Trimmed Dimension Stone)

Quarry blocks by colour, size class and soundness for slab processors in China, Italy and the Middle East

Black Granite Blocks (South Africa, India)Larvikite Blocks (Norway)
View specifications

Raw Dolomite (Flux, Glass & Refractory Grade)

Uncalcined dolomite by MgO, CaO, silica and size for blast furnaces, steel shops, glass and refractories

BF / Sinter Grade — MgO ≥ 18%, CaO ≥ 28%, lump 10–40 / 40–80 mmSMS Grade — SiO₂ ≤ 3%, Fe₂O₃ + Al₂O₃ ≤ 2%
View specifications

Typical Specification

Limestone CaCO₃≥ 90–97%
Gypsum CaSO₄·2H₂O85–95%
Aggregate LA Abrasion≤ 25–40%
Parcel Size30,000–58,000 MT (Handymax / Supramax)

Specifications are indicative and adjusted to the agreed contract and destination requirements. Final spec confirmed on COA / SGS.

Available Grades

Flux Limestone 10–80 mm (≥ 95% CaCO₃)Cement-Grade Crushed Limestone 0–40 mmCement-Grade Gypsum 85–92%Plasterboard-Grade Gypsum 92–95%Crushed Gabbro & Granite 5–40 mmArmour Rock 1–6 t & BouldersAcidspar > 97% & Metspar ≤ 97% CaF₂Refractory Calcined Bauxite & Brown Fused AluminaQuicklime CL 90-Q (lump, pebble, powder)Hydrated Lime CL 90-S & Food Grade E526Burnt Dolomite & Dolomitic Lime

Applications

  • Cement clinker & set retarding
  • Steel flux & sinter
  • Plasterboard & plaster
  • Ready-mix concrete & asphalt
  • Road base & sub-base
  • Breakwaters & reclamation
  • Steel & foundry flux (fluorspar)
  • Refractory bricks & castables
  • Mining pH control & flue-gas desulphurisation (lime)
  • Water treatment (hydrated lime)

Category

Industrial Minerals & Construction

Incoterms

FOB · CFR · CIF

Pricing basis

USD / MT

Inspection

SGS / Intertek at load port

Ready to source Construction Minerals?

Send your quantity, preferred Incoterms and destination port. Qualified requirements receive a workable offer against verified supply.

Have Construction Minerals to sell? Submit an offer — we'll match it against live buyer demand.

Related commodities

Cement & Clinker

OPC, clinker, white cement, GGBFS & fly ash in bulk and sling bags

Industrial Minerals

Ilmenite, rutile, zircon, barite, silica sand, kaolin and feldspar bought on chemistry, brightness and particle size

Timber, Logs, Plywood, Wood Panels & Wood Pulp

Sawn timber, plywood, MDF, particle board and OSB, softwood and teak logs, pulp chips, kraft and dissolving pulp and OCC, with legality documents as a condition of shipment